Panax Ginseng: Clinical Evidence & Substantiation Summary
What Is Panax Ginseng?
Panax ginseng (Korean/Asian ginseng) is one of the most widely used adaptogens with thousands of years of traditional use. Its active compounds, ginsenosides, have diverse pharmacological effects on energy, cognitive function, immune modulation, and sexual health.
Mechanism of action: Ginsenosides interact with multiple molecular targets including steroid hormone receptors, nitric oxide synthase, and ion channels. They modulate the HPA axis, enhance cholinergic neurotransmission, and stimulate nitric oxide production for vasodilation.
Clinical Evidence Summary
Below are 5 key clinical studies on Panax Ginseng. Nutra Comp analyses 58+ studies in its full clinical evidence report.
Panax ginseng and cognitive performance: a systematic review
Population: 10 RCTs
Key finding: Ginseng supplementation improved working memory and reaction time in healthy adults (p<0.05).
Ginseng and fatigue reduction: meta-analysis
Population: 12 RCTs
Key finding: Ginseng significantly reduced fatigue scores compared with placebo (SMD -0.33, p=0.002).
Korean red ginseng and immune function
Population: 100 healthy adults
Key finding: Red ginseng (3 g/day for 12 weeks) significantly increased NK cell activity and reduced cold/flu incidence (p<0.05).
Ginseng and erectile function: a meta-analysis
Population: 7 RCTs, 349 men
Key finding: Korean red ginseng significantly improved erectile function scores (IIEF) vs. placebo (WMD: 3.0, p=0.007).
Panax ginseng and blood sugar: systematic review
Population: 8 RCTs
Key finding: Ginseng supplementation modestly reduced fasting glucose and improved insulin sensitivity in at-risk populations.
Evidence-Based Structure–Function Claims
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Key Terms
Frequently Asked Questions
Is Panax ginseng FDA approved?
Panax ginseng is sold as a dietary supplement under DSHEA. It does not require FDA approval. It should not be confused with American ginseng (P. quinquefolius) or Siberian ginseng (Eleutherococcus), which are different species.
What are the most studied benefits?
The strongest evidence supports ginseng for fatigue reduction, cognitive performance, immune function, and sexual health in men.
What dosage is used in studies?
Most studies use 200–400 mg/day of extract standardised to 4–7% ginsenosides. Korean red ginseng studies often use 1–3 g/day of the whole root preparation.
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